KR0132774B1 - 전자식 전화기 - Google Patents

전자식 전화기

Info

Publication number: KR0132774B1
Authority: KR; South Korea
Prior art keywords: transistor; main electrode; coupled; resistor; supply circuit
Prior art date: 1988-11-30

Application number

KR1019890017213A

Other languages

English (en)

Korean (ko)

Other versions

KR900008808A (ko

Inventor

반 돈겐 프레데릭

베르나르 에밀 쥬엥 필립

요하네스 마리아 시예베르스 페트루스

Original Assignee

에프. 제이. 스미트

필립스 일렉트로닉스 엔. 보

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-11-30

Filing date

1989-11-27

Publication date

1998-04-25

1989-11-27 Application filed by 에프. 제이. 스미트, 필립스 일렉트로닉스 엔. 보 filed Critical 에프. 제이. 스미트

1990-06-04 Publication of KR900008808A publication Critical patent/KR900008808A/ko

1998-04-25 Application granted granted Critical

1998-04-25 Publication of KR0132774B1 publication Critical patent/KR0132774B1/ko

Images

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Amplifiers (AREA)
Devices For Supply Of Signal Current (AREA)
Telephonic Communication Services (AREA)

KR1019890017213A 1988-11-30 1989-11-27 전자식 전화기 KR0132774B1 (ko)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
NL8802945		1988-11-30
NL8802945A NL8802945A (nl)	1988-11-30	1988-11-30	Electronisch telefoontoestel.

Publications (2)

Publication Number	Publication Date
KR900008808A KR900008808A (ko)	1990-06-04
KR0132774B1 true KR0132774B1 (ko)	1998-04-25

Family

ID=19853312

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
KR1019890017213A KR0132774B1 (ko)	1988-11-30	1989-11-27	전자식 전화기

Country Status (7)

Country	Link
US (1)	US4953207A (nl)
EP (1)	EP0372616B1 (nl)
JP (1)	JPH02189052A (nl)
KR (1)	KR0132774B1 (nl)
AU (1)	AU622594B2 (nl)
DE (1)	DE68914417T2 (nl)
NL (1)	NL8802945A (nl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5982879A (en) *	1992-04-03	1999-11-09	Unex Corporation	Telephone headset amplifier and method of operation
GB2289188B (en) *	1994-04-26	1998-09-09	Motorola Inc	Telephone line interface cicuit
GB2289187B (en) *	1994-04-26	1999-01-20	Motorola Inc	Telephone line interface circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2183964B (en) *	1985-11-28	1989-10-11	Stc Plc	Telephone power supply

1988
- 1988-11-30 NL NL8802945A patent/NL8802945A/nl not_active Application Discontinuation
1989
- 1989-10-24 US US07/427,440 patent/US4953207A/en not_active Expired - Fee Related
- 1989-11-24 EP EP89202992A patent/EP0372616B1/en not_active Expired - Lifetime
- 1989-11-24 DE DE68914417T patent/DE68914417T2/de not_active Expired - Fee Related
- 1989-11-27 KR KR1019890017213A patent/KR0132774B1/ko not_active IP Right Cessation
- 1989-11-28 JP JP1306749A patent/JPH02189052A/ja active Pending
- 1989-11-29 AU AU45678/89A patent/AU622594B2/en not_active Ceased

Also Published As

Publication number	Publication date
NL8802945A (nl)	1990-06-18
AU622594B2 (en)	1992-04-09
US4953207A (en)	1990-08-28
EP0372616B1 (en)	1994-04-06
AU4567889A (en)	1990-06-07
EP0372616A1 (en)	1990-06-13
DE68914417T2 (de)	1994-10-13
DE68914417D1 (de)	1994-05-11
KR900008808A (ko)	1990-06-04
JPH02189052A (ja)	1990-07-25

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Legal Events

Date	Code	Title	Description
1989-11-27	PA0109	Patent application	Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19891127
1990-06-03	PG1501	Laying open of application
1994-11-25	A201	Request for examination
1994-11-25	PA0201	Request for examination	Patent event code: PA02012R01D Patent event date: 19941125 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 19891127 Comment text: Patent Application
1997-09-26	E701	Decision to grant or registration of patent right
1997-09-26	PE0701	Decision of registration	Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19970926
1997-12-15	GRNT	Written decision to grant
1997-12-15	PR0701	Registration of establishment	Comment text: Registration of Establishment Patent event date: 19971215 Patent event code: PR07011E01D
1997-12-15	PR1002	Payment of registration fee	Payment date: 19971215 End annual number: 3 Start annual number: 1
1998-04-25	PG1601	Publication of registration
2000-11-22	FPAY	Annual fee payment	Payment date: 20001123 Year of fee payment: 4
2000-11-22	PR1001	Payment of annual fee	Payment date: 20001123 Start annual number: 4 End annual number: 4
2001-12-16	LAPS	Lapse due to unpaid annual fee
2001-12-16	PC1903	Unpaid annual fee	Termination category: Default of registration fee Termination date: 20021011